#pragma once

#include<memory>
#include<functional>
class Buffer;
class TcpConnection;
class Timestamp;
using TcpConnectionPtr = std::shared_ptr<TcpConnection>;
using ConnectionCallback = std::function<void(const TcpConnectionPtr&)>;
using CloseCallback = std::function<void (const TcpConnectionPtr&) >;
using WriteCompleteCallback = std::function<void (const TcpConnectionPtr&)>;

using MessageCallback = std::function<void (const TcpConnectionPtr& ,
Buffer*,Timestamp)>;

using HighWaterMarkCallback = std::function<void(const TcpConnectionPtr&,size_t)>;